Bas-relief of Persian guards in Persepolis. The part buried underground survived the time specially the Arab invasion after the birth of Islam where statues and figures of the living creatures are prohibited and have to be destroyed. Persepolis is a 2500-year old World Heritage Site of ancient Persian palaces and temples near Shiraz in southern Iran. It was the ceremonial capital of the Persian Empire during the Achaemenid dynasty. At the height of its power, the Achaemenid Empire encompassed about 7.7 million square kilometers and spanned three continents, as far west as Libya to nearly all Middle East, and to Central Asia.